Published by:
CGP EDU Academic Team
Published on: August 11, 2026
The correct order in which the first ionization potential increases is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
: The electronic configuration of the elements are
The first ionization energy of 
is maximum because electron is to be drawn from stable (fully filled) orbital. The 
ionization energy of 
is greater than 
because size of the 
is bigger than 
which facilitates easy removal of electron from its outermost shell. So, the sequence is 
.
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